ECI Technology Holdings Limited, an investment holding company, engages in the provision of extra-low voltage solutions primarily on central control monitoring system to public and private sector customers in Hong Kong. The company operates in Installation and Maintenance Services, and Security Guarding Services segments. It offers consultation, design, installation, integration, implementation, and maintenance services on a range of audiovisual and security systems comprising CCTV, burglar and fire alarm systems, public address systems, audio/video solutions, access control systems, car park systems, and clubhouse management systems. The company is also involved in security guarding and EV charging businesses. It servs commercial buildings, shopping malls, hospitals, and government facilities from the private and public sectors. The company was founded in 2003 and is headquartered in Kowloon, Hong Kong. ECI Technology Holdings Limited operates as a subsidiary of ECI Asia Investment Limited.